Telescopic gunsight mounting



uvul Ull I UU OR boa-3mm SR June 9, 1936. v, DQE 2,043,430

TELESCOPIG GUNSIGHT MOUNTING Filed May 6, 1955 Patented June 9, 1936UNITED STATES OUGI bll PATENT OFFICE My invention relates to gunsightmountings and is especially adapted for the mounting of telescopicalsights.

The primary object of my invention is to provide a mounting for atelescopical sight that will remain in exact alignment when once mountedand aligned to the bore of the gun.

Another object of my invention is to provide a mounting for telescopicalsights, that will permit the removal of the telescope and the replacingthereof to its exact aligned position.

A further object of my invention is the se-' curing of the base of themount to the receiver of the gun, thereby in no way effecting the barrelproper by drilling holes therein, or otherwise altering the vibration ofthe barrel.

A still further object of my invention is to provide mounting means thatcannot be altered in alignment by anyone tampering with any adjustmentscrews.

A further object of the invention is the provsiding of means ofadjustment by the fewest umber of parts.

Other and incidental objects of this invention will be apparent in thespecification and. drawing, to follow:-

Referring to the drawing;

Figure 1 is a side elevation of my new and improved telescopicalgunsight mounting, the same being mounted to the receiver of the firearm, illustrated by dotted lines.

Figure 2 is a rear end view of the telescopical sight and its mounting,the position of the gun being indicated by dotted lines.

Figure 3 is a perspective end view of the mount.

Figure 4 is a plan view of the base plate of the mount, including thebracket for attaching to the gun.

Figure 5 is a side view of the base plate and the bracket partiallybroken away to illustrate the principle of my invention, which consistsof the tapered screw accurately aligning the bracket and the base plate.

Figure 6 is an end view of an adjustable mounting clamp.

Figure '7 is an end view of the type of mounting clamp used for holdingthe telescope for guns extracting the fired case in the right andplacing the sight in exact alignment above the bore of the barrel.

Figure 8 is an end view of a clamp for mounting the telescope on theleft side of receiver on the guns, exacting the fired case upwardly.

Figure 9 is a detailed view in. section of another preferred type oftapered assembly means.

Figure 10 is still another preferred form of assembly means.

Figure 11 is a perspective end view of the bracket.

Figure 12 is a fragmentary sectional view of base plate and bracket andillustrates a modification in the means for aligning them with eachother.

In the drawing, I indicates the stock of the rifle adjacent the receiver2 of the gun. The angle base 3 having dowel pins 4 extending into thereceiver 2, and secured thereto by the screws 5, forms a base for themounting of the base plate 6. The base plate 6 is secured to the base 3by the screws 1 threaded into the ledge 4A. The screws 1 are tapered orconically shaped as shown at 8. This tapering coacts with the tapered orconical hole l0 within the upper portion of the ledge 4A, the base plate6 has also a tapered or conical hole II for coacting with the taper orconical shape 8 of the screw 1. The screw I is threaded within the ledge4A by the thread 9. The tapering of the screws 1 is an important featureof my invention, the purpose of the taper being to exactly position thebase plate 6 when the screws are replaced after the telescopical sighthas been removed from the rifle.

Due to the fact that in order to remove or replace the telescopicalsight the screws I have to be turnedby a suitable tool coacting with theholes l2 of the screws 1, the chance of anyone tampering with the screwswithout having the tools to remove them is greatly reduced.

The telescopical sight A is mounted to the base bar 5 by the mounts l3.The circular portions I4 of the mounts encircle the telescope A and areclamped therearound by the screws l5. These mounts also have a taper orconical portion l6 at their lower ends for coacting with a taper or coneseat in the upper portion of the holes ISA. Threads I! are provided forreceiving the lock nuts HA. One of the mounts I3 is mounted within theslot IBB of the base plate 6, having adjusting screws l 'lB for aligningthe telescopical sight with the rifiebore. The type of mount shown inFigure 6 can be adjusted for height by scr ew In Figure 9 anotherpreferred form of tapered screw is used for mounting the base plate 6 tothe ledge 4A. The screw is indicated having a tapered head l8 and a locknut l9.

Figure 10 shows another form of construction where the base plate 6 istapered only, depending HUUH upon the screw thread IE to provideaccurate alignment within the ledge 4A.

One of the chief troubles encountered in the mounting of telescopicalsights has been that once they were removed from the rifle and thenreplaced they required careful aligning with the bore of the rifle, butin my invention the tapered screws insure exact replacing of the mountto the gun. In the construction shown in my invention misalignment dueto tampering by one inexperienced with the mount is eliminated, as thetapered screws will always recenter the mount to its exact zero.

By the use of tapered screw fittings the shock or recoil of the gun canin no way effect the aligned position of the telescope once it has beenperfectly aligned to the bore of the barrel. The removing and replacingof the telescope to the gun will always be accurate, and the snugnesswith which the screws can be cinched down makes it difficult for themounting to be in any way tampered with.

I do not wish to be limited to the construction herein shown anddescribed, as my invention may be adapted to other forms of embodimentstill coming within the scope of the claims, hereunto annexed.

I claim:

1. In a telescopic gunsight mounting, an angle base mounted to thereceiver of a rifle, said angle base having a ledge provided withapertures forming threaded seats having tapered centering portions, abase plate having tapered apertures corresponding to the taper of saidseats, threaded members passing through the apertures in said plate andthreaded in such seats and provided with tapered portions cooperatingwith the taper of the seats and aforesaid apertures to maintain theplate firmly on 'the base, apertures forming tapered seats in said baseplate and threaded sight supporting members provided with taperedportions seating in the last seats and lock nuts for holding them insuch seats.

2. In a telescopic gunsight mounting, a support member mounted to thereceiver of a rifle, the support member being provided with aperturesforming seats tapered at the mouths and threaded therebelow, a baseplate having tapered apertures tapering and spaced correspondingly tothe taper and spacing of the seats, threaded members threadable in suchseats and provided with tapered portions corresponding to and engagingthe tapered portions of support member seats and baseplates,therebeingho1es forming tapered seats in said base plate, andthreaded sight supporting members having tapered portions seating in thelast seats and provided with means engaging their threads designed tosecure them to the base plate.

3. In a telescopic gunsight mounting, a support member mounted to thereceiver of a gun and provided with holes forming tapering seats, a baseplate mountable thereon provided with tapered apertures corresponding tothe taper of the seats, members threaded into the holes and havingtapered portions seating in the tapered seats and tapered apertures,tapered perforate seats in the base plate, sight supporting membershaving tapered portions seatable in the perforate seats and havingnon-tapered threaded portions ex tending therebelow, and membersthreading to said threaded portions securing the sight support membersto the base plate.

4. The invention as set forth in claim 3 wherein one of the lastmentioned seats is elongated transversely of the base plate to allow fortransverse adjustment of the sight supporting member relative to suchbase plate.

HARRY V. DOE.

